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NASA direct detection laser diode driverTRW has developed a prototype driver circuit for GaAs laser diodes as part of the NASA/Goddard Space Flight Center's Direct Detection Laser Transceiver (DDLT) program. The circuit is designed to drive the laser diode over a range of user-selectable data rates from 1.7 to 220 Mbps, Manchester-encoded, while ensuring compatibility with 8-bit and quaternary pulse position modulation (QPPM) formats for simulating deep space communications. The resulting hybrid circuit has demonstrated 10 to 90 percent rise and fall times of less than 300 ps at peak currents exceeding 100 mA.
Document ID
19900044912
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Seery, B. D.
(TRW, Inc. Redondo Beach, CA, United States)
Hornbuckle, C. A.
(TRW, Inc. TRW Space and Defense Group, Redondo Beach, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Lasers And Masers
Meeting Information
Meeting: Optomechanical Design of Laser Transmitters and Receivers
Location: Los Angeles, CA
Country: United States
Start Date: January 16, 1989
End Date: January 17, 1989
Sponsors: JPL, New Mexico State Univ., SPIE
Accession Number
90A31967
Funding Number(s)
CONTRACT_GRANT: NAS5-30157
Distribution Limits
Public
Copyright
Other

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